Friction reliability criteria applied to horizontal curve design of low-volume roads

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dc.contributor.authorde Solminihac, Hernan E.
dc.contributor.authorEchaveguren, Tomas
dc.contributor.authorVargas, Sergio
dc.date.accessioned2024-01-10T12:39:06Z
dc.date.available2024-01-10T12:39:06Z
dc.date.issued2007
dc.description.abstractDesign of road horizontal curves usually considers geometric characteristics and surface pavement condition by means of friction, superelevation, and speed equations in a deterministic point of view: a unique radius and superelevation are selected, considering a uniform behavior of drivers and pavement surface condition. However, empirical evidence shows that operating speed usually exceeds design speed when design speed is lower than 100 km/h. This means that the aggregated friction demand exceeds the design friction. The friction threshold and variability are not considered in design at the present time. Therefore, the designer does not know the remaining friction available and cannot estimate the margin of safety provided by the design. This problem is important in low-volume roads (LVRs) because the design speed usually considered is lower than 100 km/h. In this paper a methodology to design horizontal curves for LVRs is proposed, considering the variability of skid resistance, pavement texture, driver behavior, and geometric design elements. Critical speed is obtained for two conditions: consistency between design and operational conditions and consistency between friction thresholds considered for the pavement surface and operational condition. For this purpose, a reliability index is estimated by using the Hasofer-Lind method. Results show that a more realistic design is obtained when an aggregated friction demand based on driver behavior is considered. A good design is obtained when design speed ranges around 60 km/h and the standard deviation of curve radius is lower than 20% of the mean radius.
dc.fechaingreso.objetodigital2024-05-23
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.3141/1989-16
dc.identifier.eissn2169-4052
dc.identifier.issn0361-1981
dc.identifier.urihttps://doi.org/10.3141/1989-16
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77146
dc.identifier.wosidWOS:000249934500017
dc.information.autorucIngeniería;De Solminihac H;S/I;52157
dc.issue.numero1989
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final147
dc.pagina.inicio138
dc.publisherSAGE PUBLICATIONS INC
dc.revistaTRANSPORTATION RESEARCH RECORD
dc.rightsacceso restringido
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleFriction reliability criteria applied to horizontal curve design of low-volume roads
dc.typeartículo
sipa.codpersvinculados52157
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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